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need select statement

Posted on 2007-03-28
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Last Modified: 2010-03-19
i have a table in sql 2005 with the following fields:

tblOrders: Customer, OrderStatus, Date

I need to find all orders that have been resubmitted once rejected, by Customer. For example:

Customer     OrderStatus     Date
abc group    rejected            12/12/2006
fgh inc         pending             12/13/2006
abc group   submitted           1/7/2007
fgh inc        submitted           1/7/2006
fgh inc        rejected             1/9/2006

the result here should be only:
abc group because they are the only ones that were rejected at some date in the past and then resubmitted.
fgh in would not be in this list because following their rejection they did not resubmit anything...

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Question by:acdagirl
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LVL 29

Expert Comment

by:Nightman
ID: 18809563
Try this:

SELECT * FROM tblOrders t1 WHERE OrderStatus='submitted' and exists (SELECT * FROM tblOrders t1 WHERE OrderStatus='rejected' AND t1.Customer=t2.Customer)
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Author Comment

by:acdagirl
ID: 18809587
WHERE OrderStatus='submitted' clause is too constricting - the status could be anything, not just submitted...
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Author Comment

by:acdagirl
ID: 18809613
shouldn't the second t1 be a t2?
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Author Comment

by:acdagirl
ID: 18809630
but I also need to account for the timeline... your query doesn't exclude orders that were resubmitted *after* they were rejected only. It yields all customers that have at any point been rejected and/or accepted...
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LVL 29

Expert Comment

by:Nightman
ID: 18809632
yes. Sorry - long day :)

And if the OrderStatus='submitted' is too restrictive, simply remove it.

SELECT * FROM tblOrders t1 WHERE EXISTS (SELECT * FROM tblOrders t2 WHERE OrderStatus='rejected' AND t1.Customer=t2.Customer)
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Accepted Solution

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Nightman earned 500 total points
ID: 18809681
How about this?

SELECT * FROM tblOrders t1 WHERE OrderStatus<>'rejected' AND EXISTS (SELECT * FROM tblOrders t2 WHERE OrderStatus='rejected' AND t1.Customer=t2.Customer AND t2.Date<t1.Date)
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